<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>创建对象的实例</title>
</head>

<body>
    <script>
        person = { firstname: "John", lastname: "Doe", age: 50, eyecolor: "blue" }
        document.write(person.firstname + " is " + person.age + " years old.");
    </script>
</body>

</html>